North America Native Plant

Privet Senna

Botanical name: Senna ligustrina

USDA symbol: SELI9

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Synonyms: Cassia bahamensis Mill. (CABA16)  âš˜  Cassia ligustrina L. (CALI10)  âš˜  Ditremexa ligustrina (L.) Britton & Rose (DILI7)  âš˜  Peiranisia bahamensis (Mill.) Britton & Rose ex Britton & P. Wilson (PEBA8)   

Privet Senna: A Cheerful Native Wildflower for Southern Gardens Looking for a low-maintenance native plant that brings sunny yellow blooms to your garden? Meet privet senna (Senna ligustrina), a delightful perennial herb that’s perfectly suited for Florida gardens and other warm southern landscapes. This unassuming wildflower packs a punch when ...

Privet Senna: A Cheerful Native Wildflower for Southern Gardens

Looking for a low-maintenance native plant that brings sunny yellow blooms to your garden? Meet privet senna (Senna ligustrina), a delightful perennial herb that’s perfectly suited for Florida gardens and other warm southern landscapes. This unassuming wildflower packs a punch when it comes to supporting local wildlife while adding natural beauty to your outdoor space.

What Makes Privet Senna Special?

Privet senna is a true Florida native, naturally occurring throughout the state as part of the region’s diverse plant community. As a perennial forb, it returns year after year without the woody stems of shrubs or trees, making it an excellent choice for wildflower gardens and naturalized areas.

The plant produces clusters of bright yellow flowers that create a cheerful display against its compound leaves. While it may not be the showiest plant in your garden, its reliable blooms and easy-going nature make it a valuable addition to any native plant collection.

Where Does Privet Senna Grow?

This native beauty calls Florida home, where it grows naturally in various habitats throughout the state. It’s also found in Puerto Rico, though it’s considered non-native there. In its native Florida range, privet senna has adapted to local conditions and supports the regional ecosystem.

Why Plant Privet Senna in Your Garden?

There are several compelling reasons to consider adding this native plant to your landscape:

  • Pollinator magnet: The bright yellow flowers attract butterflies and bees, supporting local pollinator populations
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Native credentials: Supporting local ecosystems by choosing plants that naturally belong in your area
  • Extended blooming: Provides color and interest throughout much of the growing season

Perfect Garden Settings

Privet senna works wonderfully in several garden styles:

  • Native plant gardens where it can mingle with other Florida natives
  • Butterfly gardens designed to attract and support pollinators
  • Wildflower meadows and naturalized areas
  • Low-maintenance landscapes where you want beauty without constant fussing

Growing Conditions and Care

The good news? Privet senna isn’t particularly fussy about its growing conditions. Here’s what it prefers:

  • Sunlight: Full sun to partial shade
  • Soil: Well-drained soils (it doesn’t like to sit in water)
  • Hardiness: Thrives in USDA zones 8-11, perfect for Florida and other warm southern regions
  • Water: Drought tolerant once established, though regular watering helps during dry spells

Planting and Care Tips

Getting started with privet senna is refreshingly straightforward:

  • Plant in spring after the last frost date
  • Choose a location with good drainage to prevent root rot
  • Water regularly during the first growing season to help establish strong roots
  • Once established, it’s quite self-sufficient and drought tolerant
  • Deadhead spent flowers to encourage continued blooming
  • Little to no fertilization needed – native plants prefer lean soils

The Bottom Line

Privet senna may not be the flashiest plant in the garden center, but it’s exactly the kind of reliable, beneficial native plant that makes gardening both easier and more environmentally friendly. If you’re in Florida or another warm southern state, this cheerful wildflower deserves a spot in your landscape. Your local butterflies and bees will thank you, and you’ll appreciate having a beautiful, low-maintenance plant that truly belongs in your garden.

Remember, when choosing plants for your garden, native species like privet senna are always a smart choice. They’re adapted to your local conditions, support wildlife, and typically require less water and care than non-native alternatives. It’s a win-win for both you and your local ecosystem!

Privet Senna

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Senna Mill. - senna

Species

Senna ligustrina (L.) Irwin & Barneby - privet senna

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA